高強度せん断補強筋を用いた場所打ちRC杭のせん断破壊性状に関する実験的研究

A lot of standards and indicators concerning the design and the calculation of the reinforced concrete construction including AIJ are being published by various organizations. But, there is no one clearly referred about the ultimate shear strength calculation method of the reinforced concrete circular cross section material. In the former report, the flexural failure was made to precede it. The ultimate flexure strength of a reinforced concrete round material was replaced with a rectangular section and it calculated. The result and the rectangular substitution section were obtained and a value close to the experiment value was obtained than the value requested in the square substitution section. In this report, the experiment to make the shear failure precede it is done. The shape of shear reinforcement is changed from the spiral type into the one turn configuration with the former report. And the difference between the failure property and the hysteresis property is clarified. In addition, the adaptability of the evaluation type of calculated ultimate shear yield strength is aimed at